CN216024777U - Fluidized bed for synthesizing organic silicon monomer - Google Patents
Fluidized bed for synthesizing organic silicon monomer Download PDFInfo
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- CN216024777U CN216024777U CN202122739619.2U CN202122739619U CN216024777U CN 216024777 U CN216024777 U CN 216024777U CN 202122739619 U CN202122739619 U CN 202122739619U CN 216024777 U CN216024777 U CN 216024777U
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Abstract
The utility model discloses a fluidized bed for synthesizing organic silicon monomers, which comprises: the lower end of the lathe bed is formed into an inverted cone shape, and a feed inlet is formed at the lowest part of the lathe bed; and at least one insert tube fixed to a sidewall of a lower end of the bed, and a portion of the insert tube being located inside the bed.
Description
Technical Field
The utility model relates to chemical equipment, in particular to a fluidized bed for synthesizing an organic silicon monomer.
Background
In the synthesis of the organic silicon monomer, chloromethane is used as a raw material to react with metal silicon powder under the action of a catalyst, the reaction is a gas-solid contact exothermic reaction, and the reaction rate of chloromethane gas and silicon powder solid is related to the factors such as the particle size of the silicon powder, the dosage of the catalyst, the temperature of the chloromethane and the like.
In present organosilicon monomer production, the fluidized bed is taken out together to a large amount of silica flour of the small particle size of not reacting completely and impurity, reacts once more through returning the bed device, but the fine powder surface impurity after returning the bed is more difficult for reacting, because of its particle size is littleer, is taken out the fluidized bed more easily, leads to the silica flour utilization ratio lower, and the increase cost is taken out silica flour for the danger useless, increases the environmental protection cost.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a fluidized bed for synthesizing organic silicon monomers, and at least one of the technical problems is solved.
The technical scheme adopted by the utility model for solving the technical problems is as follows: a fluidized bed for the synthesis of silicone monomers comprising:
the lower end of the lathe bed is formed into an inverted cone shape, and a feed inlet is formed at the lowest part of the lathe bed; and
at least one insert tube fixed to a sidewall of a lower end of the bed, and a portion of the insert tube is located inside the bed.
Optionally, the insertion tube is made of carbon steel.
Optionally, the outer wall of the insertion tube located inside the lathe bed is provided with a wear-resistant coating.
Optionally, an included angle between the insertion tube positioned in the fluidized bed and the side wall of the lower end of the bed body is 30-90 ℃.
Optionally, the insert tube is positioned within the fluidized bed perpendicular to the direction of material movement within the fluidized bed.
Optionally, the insertion tube is provided in plurality, wherein two insertion tubes are formed as insertion tube groups, and the tube mouths of the two insertion tubes in each insertion tube group are arranged toward each other.
Optionally, the portions of the plurality of insert tubes located within the fluidized bed are located in the same plane.
Optionally, the insertion tubes between the different insertion tube sets are arranged in parallel, and the distance between the two insertion tube sets is 300 and 1000 mm.
Optionally, the distance between the feed inlet and the insertion tube is 1000-2000 mm.
Optionally, the end of the insertion tube located inside the bed is formed as a constriction.
The utility model has the following beneficial effects: when the fluidized bed for synthesizing the organic silicon monomer in the embodiment is used, silicon powder is fed through the feeding hole, methyl chloride is provided through the insertion pipe, and preferably, the linear speed of the methyl chloride is 8-20 times of the feeding speed of the feeding hole, so that when organic silicon is synthesized in the fluidized bed, the synthesis efficiency is improved, the utilization rate of the silicon powder in the synthesis of the organic silicon monomer can be effectively improved, the dangerous solid waste of the organic silicon is reduced, the environmental hazard is reduced, and the cost is reduced.
Drawings
FIG. 1 is a schematic structural view of a fluidized bed for the synthesis of silicone monomers according to the present invention;
fig. 2 is a top view of fig. 1.
The notation in the figures means: 1-a lathe bed; 2-a feed inlet; 3-inserting a tube; 4-wear resistant coating; 5-necking down.
Detailed Description
The technical solution of the present invention is further described below with reference to the following embodiments and the accompanying drawings.
Example 1
This example provides a fluidized bed for organosilicon monomer synthesis, which includes: a bed 1 and at least one insert tube 3.
The lower end of the lathe bed 1 is formed into an inverted cone shape, and a feed inlet 2 is formed, wherein the feed inlet 2 is positioned at the lowest part of the lathe bed 1; the insertion tube 3 is fixed to a side wall of a lower end of the bed 1, and a part of the insertion tube 3 is located inside the bed 1.
Therefore, through the arrangement of the inserting pipe 3, the mixing uniformity of the silicon powder and the chloromethane is improved, the amount of unreacted silicon powder is reduced, the utilization rate of the silicon powder is effectively increased, and the problem of insufficient utilization rate of the silicon powder of the organic silicon monomer synthesis device is solved; moreover, the fluidization state of the reaction zone of the middle and upper fluidized bed is not disturbed.
In this embodiment, the insertion tube 3 is made of a carbon steel material, and a portion of the insertion tube 3 is located outside the bed 1. In order to prolong the service life of the insert tube 3, the outer wall of the insert tube 3 positioned inside the lathe bed 1 is provided with a wear-resistant coating 4, wherein the wear-resistant coating 4 can be a ceramic or metal oxide layer or the like.
As an arrangement mode, the included angle between the inserting pipe 3 positioned in the fluidized bed and the side wall of the lower end of the bed body 1 is 30-90 ℃, and preferably, the inserting pipe 3 positioned in the fluidized bed is vertical to the moving direction of materials in the fluidized bed.
For example, when the fluidized bed is vertically arranged, the feeding direction through the feeding port and the material direction in the fluidized bed are both vertical directions, and at this time, the insertion tube 3 located in the fluidized bed is horizontally arranged.
The insertion pipes 3 are provided in plurality, wherein two insertion pipes 3 are formed as insertion pipe groups, and the pipe orifices of two insertion pipes 3 in each insertion pipe group are arranged towards each other, and more preferably, the parts of two insertion pipes 3 in the fluidized bed in the same insertion pipe group can be positioned on the same straight line in the same plane, so as to ensure that no tangential flow exists and maximize the effect of the hedging device.
Therefore, the insert pipe group is arranged, the methyl chloride can form the opposite impact in the fluidized bed, the methyl chloride opposite impact device is formed, and the mixing uniformity of the silicon powder and the methyl chloride is further improved.
The portions of the plurality of insertion tubes 3 located within the fluidized bed are located in the same plane, for example, in the same horizontal plane.
Preferably, the insertion tubes 3 between the different insertion tube groups are arranged in parallel, such that the distance between the two insertion tube groups is 300 and 1000 mm.
For example, as shown in fig. 2, it is provided with two insertion tube groups and has four insertion tubes 3; taking the direction of fig. 2 as an example, the two insertion tubes 3 positioned above constitute an insertion tube group, and the two insertion tubes 3 positioned below constitute another insertion tank group.
The distance between the feed inlet 2 and the inserting pipe 3 is 1000-2000 mm; the fluidized bed diameter was 2200 and 2800 mm.
In this embodiment, the end of the insertion tube 3 located inside the bed is formed as a constriction 5, i.e. the diameter of this end is smaller than the diameter of the middle of the insertion tube 3.
When the fluidized bed for synthesizing the organic silicon monomer in the embodiment is used, silicon powder is fed through the feeding hole, methyl chloride is provided through the insertion pipe, and preferably, the linear speed of the methyl chloride is 8-20 times of the feeding speed of the feeding hole, so that when organic silicon is synthesized in the fluidized bed, the synthesis efficiency is improved, the utilization rate of the silicon powder in the synthesis of the organic silicon monomer can be effectively improved, the dangerous solid waste of the organic silicon is reduced, the environmental hazard is reduced, and the cost is reduced.
Moreover, when the fluidized bed for synthesizing the organic silicon monomer is used, the fluidized bed is convenient to install, and each inserting pipe can be provided with a regulating valve to control the flow of each inserting pipe so as to reduce the safety risk; and moreover, the active surface of the silicon powder can be effectively increased, the reaction rate is increased, the conversion rate of the silicon powder is improved, the production cost is reduced, and the economic benefit is improved.
The sequence of the above embodiments is only for convenience of description and does not represent the advantages and disadvantages of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A fluidized bed for synthesizing organic silicon monomers is characterized by comprising:
the lower end of the lathe bed is formed into an inverted cone shape, and a feed inlet is formed at the lowest part of the lathe bed; and
at least one insert tube fixed to a sidewall of a lower end of the bed, and a portion of the insert tube is located inside the bed.
2. The fluidized bed for synthesizing silicone monomers according to claim 1, wherein the insertion tube is made of a carbon steel material.
3. The fluidized bed for synthesizing organosilicon monomers according to claim 1, wherein the outer wall of the insert tube located inside the bed is provided with a wear-resistant coating.
4. The fluidized bed for synthesizing organosilicon monomers according to claim 1, wherein an angle between an insertion tube located in the fluidized bed and a side wall of the lower end of the bed body is 30-90 ℃.
5. The fluidized bed for synthesizing silicone monomers according to claim 4, wherein the insertion tube located in the fluidized bed is perpendicular to the moving direction of the material in the fluidized bed.
6. The fluidized bed for synthesizing silicone monomer according to claim 4, wherein the insertion tube is provided in plurality, and wherein two insertion tubes are formed as insertion tube groups, and the nozzles of the two insertion tubes in each insertion tube group are provided facing each other.
7. The fluidized bed for synthesizing silicone monomers according to claim 6, wherein the portions of the plurality of insertion tubes located within the fluidized bed are located on the same plane.
8. The fluidized bed for synthesizing organosilicon monomers according to claim 6, wherein the insert tubes between different insert tube groups are arranged in parallel such that the distance between two insert tube groups is 300-1000 mm.
9. The fluidized bed for synthesizing organosilicon monomers as claimed in claim 1, wherein the distance between the feed inlet and the insertion tube is 1000-2000 mm.
10. The fluidized bed for synthesizing silicone monomer according to claim 1, wherein an end of the insertion tube located inside the bed is formed as a constricted portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122739619.2U CN216024777U (en) | 2021-11-10 | 2021-11-10 | Fluidized bed for synthesizing organic silicon monomer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122739619.2U CN216024777U (en) | 2021-11-10 | 2021-11-10 | Fluidized bed for synthesizing organic silicon monomer |
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| Publication Number | Publication Date |
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| CN216024777U true CN216024777U (en) | 2022-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122739619.2U Active CN216024777U (en) | 2021-11-10 | 2021-11-10 | Fluidized bed for synthesizing organic silicon monomer |
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2021
- 2021-11-10 CN CN202122739619.2U patent/CN216024777U/en active Active
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